What is OD level?The higher OD level a laser goggles is, the more protection it offers. For example, if you point a 7 Watts laser directly on a OD 3 laser goggles, there will be a 7 milliwatts leaks or laser light passing throught the laser goggles.

User attention: Do not look directly into the laser beam and the reflected beam even when you have put on the protection goggles.